150751561 has 2 divisors, whose sum is σ = 150751562. Its totient is φ = 150751560.

The previous prime is 150751537. The next prime is 150751613. The reversal of 150751561 is 165157051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87310336 + 63441225 = 9344^2 + 7965^2 .

It is a cyclic number.

It is not a de Polignac number, because 150751561 - 2⁹ = 150751049 is a prime.

It is not a weakly prime, because it can be changed into another prime (150751261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75375780 + 75375781.

It is an arithmetic number, because the mean of its divisors is an integer number (75375781).

Almost surely, 2^150751561 is an apocalyptic number.

It is an amenable number.

150751561 is a deficient number, since it is larger than the sum of its proper divisors (1).

150751561 is an equidigital number, since it uses as much as digits as its factorization.

150751561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 150751561 is about 12278.0927264783. The cubic root of 150751561 is about 532.2151985681.

The spelling of 150751561 in words is "one hundred fifty million, seven hundred fifty-one thousand, five hundred sixty-one".